Rigid polyurethane foam containing reactive flame retardant
US11352479B2 · kind B2 · utility
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12References
13Claims
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Key dates
| Filing date | Jul 23, 2018 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/162
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides fire-retarded rigid polyurethane foam comprising the reaction product of polyol and isocyanate foam forming components and a dialkyl phosphorus-containing compound, namely a reactive mono-hydroxyl-functional dialkyl phosphinates, as flame retardant, serving as highly efficient reactive flame retardant in said rigid polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.